To understand how it works we need to look at the difference between sandy soil and clay soil.

要了解它的工作原理，我们需要了解沙土和粘土之间的区别。

But clay soil is made up of much smaller particles that cling together and naturally stop water from escaping.

但粘土由更小的颗粒组成，这些颗粒粘在一起，自然会阻止水流失。

Roses grow well in a clay soil.

【soil】玫瑰在粘土中生长良好。

Rain washed these deposits, along with wood ashes, down into the clay soil along the River Tiber.

雨水将这些沉积物和木灰一起冲刷到台伯河沿岸的粘土中。

The core is made of clay soils that are highly  impermeable to seepage, while the outer shells have less stringent specifications.

核心由高度防渗的粘土制成，而外壳的规格不太严格。

The goal of the upgrade is to remove weight from the clay soils below the building, transferring it to the stronger bedrock further below and thus slowing down the settlement.

升级的目标是减轻建筑物下方粘土的重量，将其转移到下方更坚固的基岩上， 从而减缓沉降速度。